7Artisans 4mm f/2.8 Circular Fisheye 4mm
Delivering a 225° circular-fisheye view on APS-C (6mm equivalent) with an f/2.8 aperture, it captures low-light scenes with pronounced distortion. Weighing just 201g and featuring a de-clicked aperture ring, the lens pairs naturally with gimbals and drones for smooth video iris changes. It’s best for macro shooters working at its 3.3-inch minimum focus distance and panorama creators stitching 360° spheres from two shots.
Focal length 4mm
Aperture f/2.8
Mount Micro Four Thirds
Weight 201 g
af type Manual Focus
lens type fisheye
51 Overall Score
Price CA$205
Snapshot
What owners think
How owner sentiment changed over time
ExclusiveBased on when customers actually wrote their reviews - so you can see whether early praise held up.
78/100Our AI sentiment read
Based on 8 dated customer reviews, grouped by calendar quarter. Period analysis is in English.
The proof
Performance
Specifications
Full Specifications
Optics
| Type | Fisheye |
| Focal Length Min | 4 |
| Focal Length Max | 4 |
| Elements | 10 |
| Groups | 8 |
Aperture
| Max Aperture | f/2.8 |
| Min Aperture | f/16 |
| Constant | No |
| Diaphragm Blades | 7 |
Build
| Mount | Micro Four Thirds |
| Format | micro-four-thirds |
| Weight | 0.2 kg / 0.4 lbs |
AF & Stabilization
| AF Type | Manual Focus |
| Stabilization | No |
Focus
| Min Focus Distance | 85 |
vs Competition
| Spec | 7Artisans 4mm f/2.8 Circular Fisheye 4mm | Tamron Di III VC 28-300mm f/4-7.1 VXD | Sigma Contemporary 18-50mm f/2.8 DC DN | Nikon NIKKOR Z DX 16-50mm f/3.5-6.3 VR | Sony E 18-135mm f/3.5-5.6 OSS | Panasonic LUMIX S S-E100 |
|---|---|---|---|---|---|---|
| Focal Length | 4mm | 28-300mm | 18-50mm | 16-50mm | 18-135mm | 100mm |
| Max Aperture | f/2.8 | f/4 | f/2.8 | f/3.5 | f/3.5 | f/2.8 |
| Mount | Micro Four Thirds | Sony E | Sony E | Nikon Z | Sony E | L-Mount |
| Stabilization | false | true | false | true | true | false |
| Weather Sealed | false | true | true | false | false | true |
| Weight (g) | 201 | 590 | 290 | 135 | 326 | 298 |
| AF Type | Manual Focus | VXD linear motor | stepping motor | Stepping Motor | Linear motor | Dual phase linear motor |
| Lens Type | fisheye | zoom | zoom | zoom | zoom | macro |
| Compare | Compare | Compare | Compare | Compare |
| Product | AF | Bokeh | Build | Macro | Optical | Aperture | User Sentiment | Versatility | Social Proof | Stabilization |
|---|---|---|---|---|---|---|---|---|---|---|
| 7Artisans 4mm f/2.8 Circular Fisheye 4mm | 13.3 | 81.8 | 82.1 | 94.3 | 44.6 | 83.9 | 30 | 33.6 | 37.9 | 36.8 |
| Tamron Di III VC 28-300mm f/4-7.1 VXD Compare | 98 | 77.9 | 65.1 | 85.8 | 96.7 | 66 | 91.2 | 97.7 | 55.8 | 82.4 |
| Sigma Contemporary 18-50mm f/2.8 DC DN Compare | 86.8 | 81.8 | 86 | 91.7 | 82.2 | 83.9 | 80.9 | 78.6 | 89.8 | 36.8 |
| Nikon NIKKOR Z DX 16-50mm f/3.5-6.3 VR Compare | 86.8 | 75.4 | 92.7 | 45.2 | 74.1 | 77.3 | 0 | 83.3 | 81.1 | 95.3 |
| Sony E 18-135mm f/3.5-5.6 OSS Compare | 98 | 75.4 | 72.5 | 40.3 | 78.5 | 77.3 | 44.7 | 95.8 | 89.8 | 82.4 |
| Panasonic LUMIX S S-E100 Compare | 98 | 87 | 85.8 | 82 | 83.4 | 83.9 | 80.9 | 33.6 | 65.7 | 36.8 |
Price
Value & Pricing
From CA$205
B&H Photo 2 offers From CA$205
We started tracking prices for this product on May 29, 2026. The chart appears once we have more data.
